9/13/2007 @ 6:00PM

In Pictures: Most Expensive ZIP Codes

24. Los Altos, Calif.

94024

This six-bedroom, six-bathroom mansion set among Santa Clara County’s hills has 6,311 square feet of space boasting vaulted ceilings and hardwood and tile floors. Outside, there are breathtaking views across the hilltops and nearby valley visible from the large lawns or the rear patio.